* {
    box-sizing: border-box;
}

html,body {
    margin: 0;
    padding: 0;
    height: 100%;
    width: 100%;
}

.wrap {
    position: relative;
    width: 100%;
    height: 100%;
    max-width: 7.5rem;
    max-height: 13.34rem;
    background: url('../img/平台下载背景图层1@2x.png') no-repeat;
    background-size: 100% 100%;
    background-position: 50%;
    margin: 0 auto;
    padding-top: 2.66rem;
}

.logo {
    width: 3.05rem;
    height: 4.01rem;
    background: url('../img/矢量智能对象拷贝@2x.png') no-repeat;
    background-size: 100% 100%;
    margin: 0 auto;
}
.android {
    width: 5.93rem;
    height: 0.88rem;
    background: url('../img/安卓下载@2x.png') no-repeat;
    background-size: 100% 100%;
    margin: 1.2rem auto 0;
}
.ios {
    width: 5.93rem;
    height: 0.88rem;
    background: url('../img/IOS下载拷贝@2x.png') no-repeat;
    background-size: 100% 100%;
    margin: 0.32rem auto 0;
}
@media screen and (min-width: 400px) {
    .wrap {
        background-image: url('../img/平台背景图层1@3x.png') no-repeat;
        background-size: 100% 100%; 
        max-width: 11.25rem;
        max-height: 18.15rem;
    }
    .logo {
        background: url('../img/矢量智能对象拷贝@3x.png') no-repeat;
        background-size: 100% 100%; 
        width: 4.58rem;
        height: 6.02rem;
    }
    .android {
        background: url('../img/安卓下载@3x.png') no-repeat;
        background-size: 100% 100%; 
        max-width: 8.90rem;
        max-height: 1.32rem;
    }
    .ios {
        background: url('../img/IOS下载拷贝@3x.png') no-repeat;
        background-size: 100% 100%; 
        max-width: 8.90rem;
        max-height: 1.32rem;
    }
}
@media screen and (min-width: 768px) {
    .wrap {
        background-image: url('../img/平台背景图层1@3x.png') no-repeat;
        background-size: 100% 100%; 
        max-width: 11.25rem;
        max-height: 18.15rem;
    }
    .logo {
        background: url('../img/矢量智能对象拷贝@3x.png') no-repeat;
        background-size: 100% 100%; 
        width: 3.05rem;
        height: 4.01rem;
    }
    .android {
        background: url('../img/安卓下载@3x.png') no-repeat;
        background-size: 100% 100%; 
        width: 5.93rem;
        height: 0.88rem;
    }
    .ios {
        background: url('../img/IOS下载拷贝@3x.png') no-repeat;
        background-size: 100% 100%; 
        width: 5.93rem;
        height: 0.88rem;
    }
}


